Well there has to be some advantage to these behaviors people say are bad for us. Like fearing rejection, being submissive, bad body language, not being confident, etc. Otherwise why do we naturally feel such strong instincts to do those things if there is such advantage to be had in doing otherwise?
Not everyone feels the need to submit, even in the same situations. I'm sceptical of the idea that the genetic component of the idea is the main thing at play here.
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.